react-navigation 跨 tabs 返回首页

import { NavigationActions } from 'react-navigation';const navigationAction = NavigationActions.reset({  index: 0,actions: [ NavigationActions.navigate({ routeName: 'RootTabNav', //这个是tabsaction:NavigationActions.navigate({routeName: 'Near', // 这个是tabs 里面的任何一个tab})})] 
})// 使用的地方
this.props.navigation.dispatch(navigationAction)